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Overview of Color Blindness

Color vision deficiency, commonly called color blindness, results from a malfunction or absence of cone cells in the retina. The degree of deficiency ranges from a slight difficulty distinguishing among different shades of one color to the inability to see any color. There are millions of photoreceptor cells in the human eye's retina that contain photosensitive pigments. There are two types of these specialized cells: cones and rods. Each retina contains approxim...Read the full article